CN201433871Y - Dry gas seal for high-pressure compressor - Google Patents
Dry gas seal for high-pressure compressor Download PDFInfo
- Publication number
- CN201433871Y CN201433871Y CN2009200826641U CN200920082664U CN201433871Y CN 201433871 Y CN201433871 Y CN 201433871Y CN 2009200826641 U CN2009200826641 U CN 2009200826641U CN 200920082664 U CN200920082664 U CN 200920082664U CN 201433871 Y CN201433871 Y CN 201433871Y
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- seal
- ring
- dry gas
- spring seat
- seat
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Abstract
The utility model discloses a dry gas seal for a high-pressure compressor, which mainly comprises a shaft sleeve and a series connected type dry gas sealing structure which further comprises a primaryend surface seal and a secondary end surface seal connected with each other. A comb teeth seal is arranged between the primary end surface seal and the secondary end surface seal; and a carbocycle seal is arranged on one side of the secondary end surface seal. The utility model mainly provides the series connected type dry gas seal comprising the primary end surface seal and the secondary end surface seal; and the primary seal can bear 17.2 MP of pressure, while the secondary seal which serves as a spare seal of the primary seal also can bear 17.2 MPa of pressure. The bearing pressure of theseal structure is considerably higher than that of the dry gas seals of other compressors for domestic production; and the bearing pressure of the dry gas seal of the domestic compressors is less than10.0 MPa. Moreover, as stability of the gas film on the dry gas sealing end surface under high pressure is key of the crucial dry gas seal technology of the high-pressure centrifugal compressor, thesealing end surface adopts a fluid dynamical pressure slot in the shape of a circular arc-shaped Chinese character 'shi', so that both the intensity and stability of the gas film on the end surface are greatly improved.
Description
Technical field
The utility model relates to seal arrangement, specifically relates to a kind of high pressure compressor dry gas seals.
Background technique
Dry gas seals has that long service life, power consumpiton are little, processing medium is not without advantages such as leakages, has sealed up widely-usedly at present at the high speed centrifugation compressor shaft, but on the compressor of pressure greater than 10Mpa, the dry gas seals product is almost monopolized by offshore company.The high pressure dry gas seals product of offshore company in use, not only have problems such as import spare part length at delivery date, price height, and a cover is only arranged, sealing is in case the fault that meets accident, being prone to unit does not have the situation that seals spare part, will directly have influence on the safe operation of process units.
The model utility content
The purpose of this utility model is to address the above problem, and provides a kind of and bears that pressure is big, the intensity of end face air film and the high high pressure compressor dry gas seals of stability.
For reaching the foregoing invention purpose, the technological scheme that is adopted is: the high pressure compressor dry gas seals, it mainly is the axle sleeve that rotates by with rotating shaft, reach the tandem dry gas sealing structure that first order end face seal and second level end face seal connect to form, be provided with labyrinth seal between described first order end face seal and the second level end face seal, a side of described second level end face seal is provided with the carbocyclic ring sealing.
Described first order end face seal comprises rotating ring A, stationary ring A and spring seat A, second level end face seal comprises rotating ring B, stationary ring B and spring seat B, between first order end face seal and second level end face seal, be provided with shared rotating seat, wherein rotating ring A and stationary ring A are arranged between axle sleeve and the spring seat A, rotating ring B and stationary ring B are arranged between rotating seat and the spring seat B, and an end of described rotating seat extend in the first order end face seal and is connected with stationary ring A; Described labyrinth seal is arranged at spring seat A, spring seat B and rotating seat three's jointing place.
Also be provided with clamping sleeve between described spring seat B and the axle sleeve; Described carbocyclic ring sealing comprises carbon gland, carbocyclic ring back-up ring, carbocyclic ring seat, carbocyclic ring and carbocyclic ring extension spring, the described carbocyclic ring seat that is fixed with carbon gland is fixed on the spring seat B by joint bolt, and carbocyclic ring back-up ring, carbocyclic ring and carbocyclic ring extension spring are arranged between carbon gland and the carbocyclic ring seat.
Also be respectively equipped with throw-out collar A and throw-out collar B between described spring seat A and the stationary ring A and between spring seat B and the stationary ring B; Also be respectively equipped with spring between described spring seat A and the throw-out collar A and between spring seat B and the throw-out collar B.
Also be provided with stop pin A and stop pin B in the described carbocyclic ring sealing.
Described spring seat B is provided with stop pin C near the position of throw-out collar B.
The adjacent position of stationary ring A of the outer wall of described axle sleeve and first order end face seal is provided with driving pin.
Described rotating ring A and rotating ring B end faces of both sides are provided with circular-arc " scholar " font fluid dynamic pressure groove in turning.
In sum, the tandem dry gas seals that the utility model mainly is made up of the first order and second level end face seal is provided with labyrinth seal between the first order and second level seal face, and sealing back, the second level is provided with the carbocyclic ring sealing.First order sealing can be born 17.2Mpa pressure, and second level sealing also can be born 17.2Mpa pressure as the backup seal of first order sealing.Other compressor dry gas seals that this sealing structure can bear the pressure ratio domestic production can be born pressure and are improved largely.The pressure that state's inner compressor dry gas seals can bear is all less than 10.0Mpa.Under high pressure the stability of dry gas seals end face air film is the key of high-pressure centrifugal compressor dry gas seals technology, and seal face adopts circular arc " scholar " word fluid dynamic pressure groove, has improved the intensity and the stability of end face air film greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the both ends of the surface structural representation of rotating ring;
Among the figure: 1-rotating shaft, 2-axle sleeve, 3-rotating ring A, 4-plus screw, 5-stationary ring A, 6-throw-out collar A, 7-spring, 8-spring seat A, 9-rotating seat, 10-joint bolt, 11-labyrinth seal, 12-rotating ring B, 13-stationary ring B, 14-clamping sleeve, 15-throw-out collar B, 16-spring seat B, 17-carbon gland, 18-carbocyclic ring back-up ring, 19-carbocyclic ring seat, 20-carbocyclic ring, the extension spring of 21-carbocyclic ring, 22-stop pin A, 23-stop pin B, 24-stop pin C, 25-driving pin.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
As shown in Figure 1, the high pressure compressor dry gas seals mainly is the axle sleeve 2 that rotates by with rotating shaft 1, reach the tandem dry gas sealing structure that first order end face seal and second level end face seal connect to form, be provided with labyrinth seal 11 between described first order end face seal and the second level end face seal, a side of described second level end face seal is provided with the carbocyclic ring sealing.
As shown in Figure 1, described first order end face seal comprises rotating ring A 3, stationary ring A 5 and spring seat A 8, second level end face seal comprises rotating ring B 12, stationary ring B 13 and spring seat B 16, between first order end face seal and second level end face seal, be provided with shared rotating seat 9, wherein rotating ring A 3 and stationary ring A 5 are arranged between axle sleeve 2 and the spring seat A 8, rotating ring B 12 and stationary ring B 13 are arranged between rotating seat 9 and the spring seat B 16, and an end of described rotating seat 9 extend in the first order end face seal and is connected with stationary ring A 5; Described labyrinth seal is arranged at spring seat A 8, spring seat B 16 and rotating seat 9 threes' jointing place.Also be provided with clamping sleeve 14 between described spring seat B 13 and the axle sleeve 2; Described carbocyclic ring sealing comprises carbon gland 17, carbocyclic ring back-up ring 18, carbocyclic ring seat 19, carbocyclic ring 20 and carbocyclic ring extension spring 21, the described carbocyclic ring seat 19 that is fixed with carbon gland 17 is fixed on the spring seat B 16 by joint bolt, and carbocyclic ring back-up ring 18, carbocyclic ring 20 and carbocyclic ring extension spring 21 are arranged between carbon gland 17 and the carbocyclic ring seat 19.Also be respectively equipped with throw-out collar A 6 and throw-out collar B 15 between described spring seat A 8 and the stationary ring A 5 and between spring seat B 16 and the stationary ring B 13; Also be respectively equipped with spring 7 between described spring seat A 8 and the throw-out collar A 6 and between spring seat B 16 and the throw-out collar B 15.Also be provided with stop pin A 22 and stop pin B 23 in the described carbocyclic ring sealing.Described spring seat B 16 is provided with stop pin C 24 near the position of throw-out collar B 15.The stationary ring A 5 adjacent positions of the outer wall of described axle sleeve 2 and first order end face seal are provided with driving pin 25.
As shown in Figure 2, described rotating ring A 3 and rotating ring B 12 end faces of both sides are provided with circular-arc " scholar " font fluid dynamic pressure groove in turning.
High pressure dry gas seals material is selected: the intensity of friction pair material must satisfy high compressive load, and material is reliable, and reliable performance satisfies long-term operation.Under high pressure, high rotating speed, adopt pressureless sintering SiC to make rotating ring, adopt import to soak antimony heavy duty graphite and make stationary ring, in hypervelocity, overvoltage test, all can satisfy usage requirement.
Auxiliary seal ring is selected: under high pressure, auxiliary seal ring requires to have good sealing and reliability.Under the high pressure rapidly release be the test that must carry out, seal ring is prevented that the release explosion from having proposed requirements at the higher level.Auxiliary seal ring must be selected the special spring-actuated outer ring structure form of covering macromolecular material of import; The outer covering layer material selects to have enough hardness and intensity, the modification filled polytetrafluoroethylene material of good resisting temperature croop property.
Claims (8)
1, high pressure compressor dry gas seals, it is characterized in that: described high pressure compressor dry gas seals mainly is the axle sleeve (2) that rotates by with rotating shaft (1), reach the tandem dry gas sealing structure that first order end face seal and second level end face seal connect to form, be provided with labyrinth seal (11) between described first order end face seal and the second level end face seal, a side of described second level end face seal is provided with the carbocyclic ring sealing.
2, according to the described high pressure compressor dry gas seals of claim 1, it is characterized in that: described first order end face seal comprises rotating ring A (3), stationary ring A (5) and spring seat A (8), second level end face seal comprises rotating ring B (12), stationary ring B (13) and spring seat B (16), between first order end face seal and second level end face seal, be provided with shared rotating seat (9), wherein rotating ring A (3) and stationary ring A (5) are arranged between axle sleeve (2) and the spring seat A (8), rotating ring B (12) and stationary ring B (13) are arranged between rotating seat (9) and the spring seat B (16), and an end of described rotating seat (9) extend in the first order end face seal and is connected with stationary ring A (5); Described labyrinth seal is arranged at spring seat A (8), spring seat B (16) and rotating seat (9) three's jointing place.
3, according to the described high pressure compressor dry gas seals of claim 1, it is characterized in that: also be provided with clamping sleeve (14) between described spring seat B (13) and the axle sleeve (2); Described carbocyclic ring sealing comprises carbon gland (17), carbocyclic ring back-up ring (18), carbocyclic ring seat (19), carbocyclic ring (20) and carbocyclic ring extension spring (21), the described carbocyclic ring seat (19) that is fixed with carbon gland (17) is fixed on the spring seat B (16) by joint bolt, and carbocyclic ring back-up ring (18), carbocyclic ring (20) and carbocyclic ring extension spring (21) are arranged between carbon gland (17) and the carbocyclic ring seat (19).
4, according to the described high pressure compressor dry gas seals of claim 2, it is characterized in that: also be respectively equipped with throw-out collar A (6) and throw-out collar B (15) between described spring seat A (8) and the stationary ring A (5) and between spring seat B (16) and the stationary ring B (13); Also be respectively equipped with spring (7) between described spring seat A (8) and the throw-out collar A (6) and between spring seat B (16) and the throw-out collar B (15).
5, according to the described high pressure compressor dry gas seals of claim 1, it is characterized in that: also be provided with stop pin A (22) and stop pin B (23) in the described carbocyclic ring sealing.
6, according to the described high pressure compressor dry gas seals of claim 2, it is characterized in that: described spring seat B (16) is provided with stop pin C (24) near the position of throw-out collar B (15).
7, according to the described high pressure compressor dry gas seals of claim 1, it is characterized in that: the adjacent position of stationary ring A (5) of the outer wall of described axle sleeve (2) and first order end face seal is provided with driving pin (25).
8, according to the described high pressure compressor dry gas seals of claim 2, it is characterized in that: described rotating ring A (3) and rotating ring B (12) end faces of both sides are provided with circular-arc " scholar " font fluid dynamic pressure groove in turning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200826641U CN201433871Y (en) | 2009-07-17 | 2009-07-17 | Dry gas seal for high-pressure compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200826641U CN201433871Y (en) | 2009-07-17 | 2009-07-17 | Dry gas seal for high-pressure compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201433871Y true CN201433871Y (en) | 2010-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200826641U Expired - Fee Related CN201433871Y (en) | 2009-07-17 | 2009-07-17 | Dry gas seal for high-pressure compressor |
Country Status (1)
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| CN (1) | CN201433871Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103168174A (en) * | 2010-10-22 | 2013-06-19 | 株式会社神户制钢所 | Compressor |
| CN104136767A (en) * | 2011-10-19 | 2014-11-05 | 克里奥斯塔股份有限公司 | Cryogenic liquid expansion turbine |
| CN105757253A (en) * | 2016-04-26 | 2016-07-13 | 成都通密封股份有限公司 | Dry gas seal of long-distance pipeline natural gas compressor unit |
| CN107906206A (en) * | 2017-12-28 | 2018-04-13 | 温州市天成密封件制造有限公司 | It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure |
| CN109723825A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of dry gas sealing device of combining form |
-
2009
- 2009-07-17 CN CN2009200826641U patent/CN201433871Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103168174A (en) * | 2010-10-22 | 2013-06-19 | 株式会社神户制钢所 | Compressor |
| CN104136767A (en) * | 2011-10-19 | 2014-11-05 | 克里奥斯塔股份有限公司 | Cryogenic liquid expansion turbine |
| CN104136767B (en) * | 2011-10-19 | 2018-11-06 | 克里奥斯塔股份有限公司 | Cryogenic liquid expansion turbine |
| CN105757253A (en) * | 2016-04-26 | 2016-07-13 | 成都通密封股份有限公司 | Dry gas seal of long-distance pipeline natural gas compressor unit |
| CN109723825A (en) * | 2017-10-27 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of dry gas sealing device of combining form |
| CN107906206A (en) * | 2017-12-28 | 2018-04-13 | 温州市天成密封件制造有限公司 | It is a kind of can bidirectional rotation barrel cover type groove end surface mechanical sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20140717 |
|
| EXPY | Termination of patent right or utility model |